cnn crime and justice correspondent joe johns is joining us, taking a look at the money and influence at the nation's capitol. >> right, and wolf, money donated to canada is just one way to measure political influence in washington, like other areas, grass roots organizing. and with the battle hitting capitol hill this week, we took a look at the money the rifle association has been spending on canada and whether the organization is getting a big bang for its buck. turns out, at least through the last election cycle the answer was not so much. the nra took center stage on capitol hill and didn't give much ground. >> law abiding gun owners will not accept blame for the acts of violent or deranged criminals. nor do we believe that government should dictate what we can lawfully own and use to protect our families. >> reporter: it is the influence of wayne lapierre and the national rifle association that makes gun advocates like diane feinstein, to say it will be an uphill battle. >> they come after you, they put together large amounts of money to defeat you. >> reporter: but he is on a m